Cisco Stock After Hours Today (Dec. 18, 2025): CSCO Slips in Late Trading as a Critical Zero‑Day Cyber Alert Hits Headlines — What to Watch Before Friday’s Open
Cisco Systems, Inc. (NASDAQ: CSCO) finished Thursday’s session with a solid rebound, then eased modestly after the closing bell as investors digested a fast-moving cybersecurity story alongside fresh SEC filings. Here’s what happened after hours on 18.12.2025 and what matters most before the U.S. stock market opens Friday, Dec. 19, 2025. Cisco stock price action: a rebound at the close, then a softer after-hours tape Cisco shares closed Thursday, Dec. 18, at $76.95, up about 1.25% from Wednesday’s close. The stock traded between $76.26 and $77.81 during the regular session, with volume around 18.9 million shares. StockAnalysis+1 In after-hours trading,